1 A siege tower. (istockphoto)
2 Siege of Orleans, 15th century. (David Nicolle)
3 Fortress of Neuf-Brisach. (Getty)
4 German infantryman at Stalingrad. (Bundesarchiv)
5 JU-87 Stuka over Stalingrad. (Bundesarchiv)
6 German infantry captain with sub-machine gun. (Bundesarchiv)
7 German infantry dug in, Stalingrad. (Bundesarchiv)
8 German assault, Stalingrad. (Bundesarchiv)
9 StuG IIIa, Stalingrad. (Bundesarchiv)
10 Tank factory, Stalingrad. (Bundesarchiv)
11 German StuG IIIa and infantry, Stalingrad. (Bundesarchiv)
12 German PzKpfw IIIj, advancing to Stalingrad. (Bundesarchiv)
13 US Sherman tank in town near Aachen. (NARA)
14 Field Marshal Walter Model. (Bundesarchiv)
15 Colonel Gerhardt Wilck. (NARA)
16 US infantry fighting, Aachen. (US Army)
17 US Sherman tanks supporting infantry, Aachen. (NARA)
18 US M12 155mm Gun Motor Carriage, Aachen. (NARA)
19 US 75mm antitank gun, Aachen. (NARA)
20 US antitank position, Aachen. (NARA)
21 US M-4 tank, Aachen. (NARA)
22 German prisoners, Aachen. (NARA)
23 USMC F4U-5 Corsair, Korea. (USMC)
24 US Marines assault Inchon. (USMC)
25 US Marine squad on approach to Seoul. (USMC)
26 US Marine squad moving through Seoul. (USMC)
27 US Marine squad suppressing sniper fire, Seoul. (US Army)
28 US Marines evacuate wounded comrade, Seoul. (USMC)
29 Raising of American flag in Seoul. (Getty)
30 US Sherman tanks after Seoul. (US Navy)
31 General Douglas MacArthur. (US Navy)
32 US M-48 tank supporting Marines, Hue. (USMC)
33 US M-48 tank overlooking bridge, Hue. (USMC)
34 US Marines overwatching a walled garden, Hue. (USMC)
35 US Marine Ontos crewman, Hue. (NARA)
36 US Marines wearing gas masks, Hue. (Getty)
37 US Marines fighting house to house, Hue. (Topfoto)
38 General Jacques Massu. (Getty)
39 Larbi Ben M’Hidi. (Getty)
40 Casbah, Algiers. (Topfoto)
41 French paras enter Algiers. (Getty)
42 Saadi Yacef. (Getty)
43 Patroling soldier in Belfast, Northern Ireland. (IWM, MH30550)
44 British soldiers fire at rioters, Northern Ireland. (IWM, HU41939)
45 British soldiers patrol in Belfast, Northern Ireland. (IWM, TR32986)
46 British soldiers marching to control riot in Londonderry. (IWM, HU43396)
47 British troops guard a barricade, Northern Ireland. (Topfoto)
48 Aftermath of PIRA bombing, Belfast, Northern Ireland. (Fred Hoare)
49 Russian soldier in Grozny. (Topfoto)
50 Chechen fighter in Grozny. (Getty)
51 Destroyed Russian BMP2 armored personnel carrier, Grozny. (Getty)
52 Chechen fighters, Grozny. (Getty)
53 Ruins of Grozny. (Topfoto)
54 Israeli infantrymen, Jenin. (IDF)
55 Israeli Merkava tanks, Jenin. (IDF)
56 Israeli infantry, West Bank. (IDF)
57 Israeli infantry enter building, Jenin. (IDF)
58 Israeli Merkava tank observing Jenin. (IDF)
59 US soldier senter Ramadi hospital. (Defense Mil)
60 Euphrates River, Ramadi.
61 US infantry providing security, Ramadi. (US Military)
62 US Marines in urban combat in Iraq. (USMC)
63 US M-1A1 tank in firefight, Iraq. (USMC)
64 USMC infantryman, Ramadi. (USMC)
65 Rebel forces, Libya. (Getty)
66 Libyan rebel army, Tripoli, Libya. (Getty)
67 Syrian rebel forces, Aleppo, Syria. (Getty)