Mohammed, who loved chicken wings and helped his mother knead dough for family bread each day, was the first to head out. He picked up his cousin Youssef* at his home nearby, and the two men headed out.

His last moments may have been filmed by Israeli forces. Gilbert’s montage includes two grainy videos of targeted killings. Youssef says he recognises himself, walking with his hands in his pockets beside Mohammed, his lifelong friend.

Raab describes that video as Graetz’s “second elimination”, in their first days in Tal al-Hawa. Graetz, who grew up in Munich, can be seen in Gilbert’s video, and his identity was confirmed by facial recognition technology and interviews with former classmates.

Establishing an invisible “security perimeter” then shooting civilians who cross it has become common practice in Gaza, Israeli soldiers have testified.

When asked how his squad decided whether to shoot unarmed Palestinians, Raab said: “Its a question of distance. There is a line that we define. They don’t know where this line is, but we do.”