yeah, the key was using the right combo of moves on the attacking side:
SPOILER
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I advanced the infantry on the wooded flank, using move to contact with a sqaud leading ahead of the rest of the platoon. I considered using a half-squad, but the full squad came in quite handy when they bumped into the russian platoon also advancing through the woods. I managed to cutoff several of the russian squads and sent them packing. The rest of the force advanced up the slope out of LOS of the MG bunker on the far flank. I then advanced troops into the wooded area, concentrating all fire on those troops at the closest end of the trench. The slope of the hill prevented the other trenches from firing on my units, so I had the firepower advantage on that end of the ridge. My MG's supressed troops further down the line. Started to assault into the trenches, rolling up the defenders and they started to break. As a surprise, the hardest part of keeping the attack moving was my troops tiring from assaulting down the length of the trench.
Spent the final turns knocking out the remaining pillboxes.