戦せん闘とう陣じん地ちの前ぜん縁えん

Meanings

1

noun

forward edge of the battle area

Military term for the front line of a defensive position; used in tactical contexts.

ground, earth

前in front, before

縁affinity, relation, connection

前ぜん線せん
前線 is a more general term for 'front line' in both military and non-military contexts, while 戦闘陣地の前縁 is a specific tactical term.

Compound of 戦闘陣地 (battle position) and 前縁 (forward edge), a direct translation of the English military term.