I spent six years in the U.S. Navy, 1965-1971.
Your ancestors, who heroically fought both the Russians and Germans 1939-1945, would not term digging around a stone combat.
If your hole was produced by an artillery explosion, while you were as near the rim as you are in the video, it would be battle.
None-the-less impressive equipment, skillfully used and well filmed.
Thank You, My meaning was not insult anybody and I am sorry if somebody feel that way.. My mistake..