Who Has the Most Troops? A Look at NATO’s Largest Forces

By Jennifer Geer Published
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Who Has the Most Troops? A Look at NATO’s Largest Forces

© 2023 Getty Images / Getty Images News via Getty Images

Since 1949, the North Atlantic Treaty Organization (NATO) has acted as an intergovernmental military alliance of member states. Starting with an alliance of 12 countries, today 32 sovereign countries make up NATO. NATO was formed with the main goal of stopping the Soviet Union from expanding into Europe. (Also see the NATO countries with the most submarines.)

To identify the NATO countries with the most military personnel, 24/7 Wall St. reviewed the 2024 Military Strength Ranking from Global Firepower, an annually updated defense-related statistics website with information on 145 countries. Countries were ranked on the total number of military personnel. We included supplemental information regarding active personnel, reserves, total population, fit-for-service, paramilitary forces, and overall military strength score.

Why Is This Important?

Estonian Foreign Ministry

NATO members work together to manage crises, promote democracy, and resolve disputes peacefully. The group’s hallmark is its principle of collective defense, which speaks to the cooperation encouraged between countries.

Here is a look at the NATO members with the most military manpower.

32. Iceland

patpongs / iStock via Getty Images
  • Total military personnel: 0
  • Active personnel: 0
  • Reserves: 0
  • Paramilitary forces: 0
  • Total population: 360,872
  • Fit-for-service: 49,800
  • Military strength score: 3.5038 – #136 out of 145

31. Luxembourg

SvetlanaSF / iStock Editorial via Getty Images
  • Total military personnel: 1,000
  • Active personnel: 1,000
  • Reserves: 0
  • Paramilitary forces: 0
  • Total population: 660,924
  • Fit-for-service: 91,208
  • Military strength score: 2.1458 – #109 out of 145

30. Montenegro

CatEyePerspective / iStock Editorial via Getty Images
  • Total military personnel: 7,850
  • Active personnel: 2,350
  • Reserves: 0
  • Paramilitary forces: 5,500
  • Total population: 602,445
  • Fit-for-service: 85,547
  • Military strength score: 2.9109 – #129 out of 145

29. Albania

Public Domain / Wikimedia Commons
  • Total military personnel: 9,100
  • Active personnel: 6,600
  • Reserves: 2,000
  • Paramilitary forces: 500
  • Total population: 3,101,621
  • Fit-for-service: 1,290,274
  • Military strength score: 1.8188 – #90 out of 145

28. Slovakia

friedebach / Flickr
  • Total military personnel: 19,500
  • Active personnel: 19,500
  • Reserves: 0
  • Paramilitary forces: 0
  • Total population: 5,425,319
  • Fit-for-service: 2,294,910
  • Military strength score: 1.1891 – #69 out of 145

27. Belgium

2007 Getty Images / Getty Images Entertainment via Getty Images
  • Total military personnel: 31,400
  • Active personnel: 25,000
  • Reserves: 6,400
  • Paramilitary forces: 0
  • Total population: 11,913,633
  • Fit-for-service: 3,860,017
  • Military strength score: 1.2064 – #70 out of 145

26. Czechia

Chalabala / iStock via Getty Images
  • Total military personnel: 32,200
  • Active personnel: 28,000
  • Reserves: 4,200
  • Paramilitary forces: 0
  • Total population: 10,706,242
  • Fit-for-service: 4,079,078
  • Military strength score: 0.7706 – #46 out of 145

25. Croatia

youngshanahan / Flickr
  • Total military personnel: 36,425
  • Active personnel: 14,325
  • Reserves: 20,100
  • Paramilitary forces: 2,000
  • Total population: 4,169,239
  • Fit-for-service: 1,571,803
  • Military strength score: 1.1333 – #66 out of 145

24. Slovenia

Slovenia+tanks | Tank
unorthodoxy / Flickr

  • Total military personnel: 38,300
  • Active personnel: 7,300
  • Reserves: 26,000
  • Paramilitary forces: 5,000
  • Total population: 2,099,790
  • Fit-for-service: 827,317
  • Military strength score: 1.8286 – #91 out of 145

23. Bulgaria

Public Domain / Wikimedia Commons

  • Total military personnel: 40,000
  • Active personnel: 37,000
  • Reserves: 3,000
  • Paramilitary forces: 0
  • Total population: 6,827,736
  • Fit-for-service: 2,628,678
  • Military strength score: 1.0132 – #62 out of 145

22. Netherlands

ajw1970 / Flickr
  • Total military personnel: 53,145
  • Active personnel: 41,380
  • Reserves: 6,765
  • Paramilitary forces: 5,000
  • Total population: 17,463,930
  • Fit-for-service: 6,374,334
  • Military strength score: 0.5644 – #40 out of 145

21. Norway

ajw1970 / Flickr
  • Total military personnel: 63,250
  • Active personnel: 23,250
  • Reserves: 0
  • Paramilitary forces: 40,000
  • Total population: 5,597,924
  • Fit-for-service: 1,836,119
  • Military strength score: 0.5664 – #41 out of 145

20. Latvia

imantsu / iStock Unreleased via Getty Images
  • Total military personnel: 65,750
  • Active personnel: 17,250
  • Reserves: 36,000
  • Paramilitary forces: 12,500
  • Total population: 1,821,750
  • Fit-for-service: 655,830
  • Military strength score: 1.9911 – #99 out of 145

19. North Macedonia

Public Domain / Wikimedia Commons
  • Total military personnel: 72,500
  • Active personnel: 9,000
  • Reserves: 60,000
  • Paramilitary forces: 3,500
  • Total population: 2,133,410
  • Fit-for-service: 782,961
  • Military strength score: 2.1717 – #110 out of 145

18. Hungary

Public Domain / Wikimedia Commons
  • Total military personnel: 76,600
  • Active personnel: 41,600
  • Reserves: 20,000
  • Paramilitary forces: 15,000
  • Total population: 9,670,009
  • Fit-for-service: 3,722,953
  • Military strength score: 0.8478 – #54 out of 145

17. Sweden

johan_h / iStock via Getty Images
  • Total military personnel: 82,300
  • Active personnel: 24,400
  • Reserves: 32,900
  • Paramilitary forces: 25,000
  • Total population: 10,536,338
  • Fit-for-service: 3,540,210
  • Military strength score: 0.4009 – #29 out of 145

16. Denmark

defenceimages / Flickr
  • Total military personnel: 83,000
  • Active personnel: 20,000
  • Reserves: 12,000
  • Paramilitary forces: 51,000
  • Total population: 5,946,984
  • Fit-for-service: 2,117,126
  • Military strength score: 0.7743 – #48 out of 145

15. Estonia

2022 Getty Images / Getty Images News via Getty Images
  • Total military personnel: 96,500
  • Active personnel: 7,700
  • Reserves: 78,800
  • Paramilitary forces: 10,000
  • Total population: 1,202,762
  • Fit-for-service: 459,455
  • Military strength score: 1.7237 – #87 out of 145

14. Canada

2020 Getty Images / Getty Images News via Getty Images
  • Total military personnel: 100,500
  • Active personnel: 68,000
  • Reserves: 27,000
  • Paramilitary forces: 5,500
  • Total population: 38,516,736
  • Fit-for-service: 13,403,824
  • Military strength score: 0.3813 – #27 out of 145

13. Lithuania

dvids / Flickr
  • Total military personnel: 141,150
  • Active personnel: 23,000
  • Reserves: 104,000
  • Paramilitary forces: 14,150
  • Total population: 2,655,755
  • Fit-for-service: 1,346,468
  • Military strength score: 1.7395 – #88 out of 145

12. Romania

2022 Getty Images / Getty Images News via Getty Images
  • Total military personnel: 151,300
  • Active personnel: 81,300
  • Reserves: 55,000
  • Paramilitary forces: 15,000
  • Total population: 18,326,327
  • Fit-for-service: 7,807,015
  • Military strength score: 0.7712 – #47 out of 145

11. Germany

ewg3D / iStock via Getty Images
  • Total military personnel: 215,600
  • Active personnel: 181,600
  • Reserves: 34,000
  • Paramilitary forces: 0
  • Total population: 84,220,184
  • Fit-for-service: 30,993,028
  • Military strength score: 0.2847 – #19 out of 145

10. Spain

ManuelVelasco / iStock Unreleased via Getty Images
  • Total military personnel: 226,902
  • Active personnel: 133,282
  • Reserves: 15,150
  • Paramilitary forces: 78,470
  • Total population: 47,222,613
  • Fit-for-service: 17,614,035
  • Military strength score: 0.2882 – #20 out of 145

9. Portugal

mtcurado / iStock Unreleased via Getty Images
  • Total military personnel: 260,400
  • Active personnel: 24,000
  • Reserves: 211,700
  • Paramilitary forces: 24,700
  • Total population: 10,467,366
  • Fit-for-service: 4,029,936
  • Military strength score: 0.5609 – #38 out of 145

8. Italy

Public Domain / Wikimedia Commons
  • Total military personnel: 289,000
  • Active personnel: 165,500
  • Reserves: 18,500
  • Paramilitary forces: 105,000
  • Total population: 61,021,855
  • Fit-for-service: 22,211,955
  • Military strength score: 0.1863 – #10 out of 145

7. France

Dave_S. / CC BY 2.0 Flickr
  • Total military personnel: 376,000
  • Active personnel: 200,000
  • Reserves: 26,000
  • Paramilitary forces: 150,000
  • Total population: 68,521,974
  • Fit-for-service: 23,845,647
  • Military strength score: 0.1878 – #11 out of 145

6. Greece

mscsealift / Flickr
  • Total military personnel: 419,050
  • Active personnel: 142,700
  • Reserves: 221,350
  • Paramilitary forces: 55,000
  • Total population: 10,497,595
  • Fit-for-service: 3,999,584
  • Military strength score: 0.4349 – #32 out of 145

5. Poland

Kamila Kozioå‚ (Koziolkamila) / iStock via Getty Images
  • Total military personnel: 602,100
  • Active personnel: 202,100
  • Reserves: 350,000
  • Paramilitary forces: 50,000
  • Total population: 37,991,766
  • Fit-for-service: 15,272,690
  • Military strength score: 0.2917 – #21 out of 145

4. Turkey

Public Domain / Wikimedia Commons
  • Total military personnel: 883,900
  • Active personnel: 355,200
  • Reserves: 378,700
  • Paramilitary forces: 150,000
  • Total population: 83,593,483
  • Fit-for-service: 3,561,604
  • Military strength score: 0.1697 – #8 out of 145

3. Finland

wstryder / Flickr
  • Total military personnel: 947,800
  • Active personnel: 24,000
  • Reserves: 870,000
  • Paramilitary forces: 53,800
  • Total population: 5,614,571
  • Fit-for-service: 1,908,954
  • Military strength score: 0.7967 – #50 out of 145

2. United Kingdom

ikholwadia / iStock via Getty Images
  • Total military personnel: 1,108,860
  • Active personnel: 184,860
  • Reserves: 924,000
  • Paramilitary forces: 0
  • Total population: 68,138,484
  • Fit-for-service: 25,074,962
  • Military strength score: 0.1443 – #6 out of 145

1. United States

  • Total military personnel: 2,127,500
  • Active personnel: 1,328,000
  • Reserves: 799,500
  • Paramilitary forces: 0
  • Total population: 339,665,118
  • Fit-for-service: 123,977,768
  • Military strength score: 0.0699 – #1 out of 145

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