Some numbers for today...

American Revolution (1775–1783)
Total servicemembers	217,000
Battle deaths	4,435
Nonmortal woundings	6,188
War of 1812 (1812–1815)
Total servicemembers	286,730
Battle deaths	2,260
Nonmortal woundings	4,505
Indian Wars (approx. 1817–1898)
Total servicemembers	106,0001
Battle deaths	1,0001
Mexican War (1846–1848)
Total servicemembers	78,718
Battle deaths	1,733
Other deaths in service (nontheater)	11,550
Nonmortal woundings	4,152
Civil War (1861–1865)
Total servicemembers (Union)	2,213,363
Battle deaths (Union)	140,414
Other deaths in service (nontheater) (Union)	224,097
Nonmortal woundings (Union)	281,881
Total servicemembers (Conf.)	1,050,000
Battle deaths (Conf.)	74,524
Other deaths in service (nontheater) (Conf.)	59,2972
Nonmortal woundings (Conf.)	unknown
Spanish-American War (1898–1902)
Total servicemembers	306,760
Battle deaths	385
Other deaths in service (nontheater)	2,061
Nonmortal woundings	1,662
World War I (1917–1918)3
Total servicemembers	4,734,991
Battle deaths	53,402
Other deaths in service (nontheater)	63,114
Nonmortal woundings	204,002
Living veterans	fewer than 251
World War II (1940–1945)3
Total servicemembers	16,112,566
Battle deaths	291,557
Other deaths in service (nontheater)	113,842
Nonmortal woundings	671,846
Living veterans	3,242,0001
Korean War (1950–1953)
Total servicemembers	5,720,000
Serving in-theater	1,789,000
Battle deaths	33,741
Other deaths in service (theater)	2,833
Other deaths in service (nontheater)	17,672
Nonmortal woundings	103,284
Living veterans	3,086,4001
Vietnam War (1964–1975)
Total servicemembers	8,744,000
Serving in-theater	3,403,000
Battle deaths	47,424
Other deaths in service (theater)	10,785
Other deaths in service (nontheater)	32,000
Nonmortal woundings	153,303
Living veterans	7,286,5001
Gulf War (1990–1991)
Total servicemembers	2,225,000
Serving in-theater	665,476
Battle deaths	147
Other deaths in service (theater)	382
Other deaths in service (nontheater)	1,565
Nonmortal woundings	467
Living veterans	1,852,0001
America's Wars Total
Military service during war	43,185,893
Battle deaths	653,708
Other deaths in service (theater)	14,560
Other deaths in service (nontheater)	525,930
Nonmortal woundings	1,447,281
Living war veterans	17,835,0004
Living veterans	23,976,000
Global War on Terror (as of Sept. 30, 2006)5
Total Servicemembers (Worldwide)	1,384,968
Deployed to Iraq and Afghanistan	165,000
Battle Deaths	3,776
Other Deaths (In Theater)	958
Non-mortal Woundings	21,649
Living Veterans	588,9236