Seven Terrifying Logic Puzzles (With Answers)

One green clothes

A veteran who was just retired from military service, one night got up from bed to go to the bathroom, he found that his wife was not lying beside him, and the pillow dropped on the wooden floor. Then, puzzled, he walked into the toilet and found a very small piece of green clothes on the toilet seat, and he was literally scared to death on the spot. So, why?

Keyword prompts: veteran, pillow, green clothes (not other colors)