• 3 College Library

• 2 Special forces (Military science)
• 1 Battles
• 1 Biological warfare
• 1 Bioterrorism
• 1 Combat
• 1 Hand-to-hand fighting
• 1 Imaginary wars and battles
• 1 Life on other planets
• 1 Soldiers
• 1 Space warfare
• 1 Villages

• 1 343 Industries
• 1 Activision (Firm)
• 1 Capcom USA
• 1 Infinity Ward (Firm)
• 1 Microsoft Corporation

• 3 English

• 1 Europe

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