Sixth Army#Germany

• 6th Army (German Empire), a World War I field Army
• 6th Army (Wehrmacht), a World War II field army
• 6th Panzer Army

• 6th Army (Russian Empire)
• 6th Army (RSFSR)
• 6th Army (Soviet Union)

• Sixth Army (France)
• Sixth Army (Italy)
• Sixth Army (Austria-Hungary)
• Sixth Army (Ottoman Empire)
• Sixth Army (Japan)
• Sixth United States Army

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