I know he didn´t have another clip in his hand because he was holding a rifle with both of them.

there was a guy from gamespot who tried the game, was shooting at Germans with a Garand and they where taking cover and when he finished his clip and the sound when the clip goes out of the gun came they began shooting at him again so the AI is probably very good

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"...await the right moment for one, and only one well-aimed shot"
-Vasily Zaitsev