Trench of Hope (2006)

While playing football, two children stumble across the grave of a French WWI infantryman who died in the trenches in 1918. His name was Pierre Delpeuch and in the last days of his life he and his comrades shared an extraordinary human adventure. Exhausted, cut off from the front, huddled in their trench, Pierre and four others bravely stood firm. Facing them was another trench containing five similar exhausted and determined Germans. Their only aim was to resist, whatever the cost, until reinforcements arrived.

Unfortunately the movie Trench of Hope is not yet available on HBO Max.