Just looking at the set-up I knew the Romanians were doomed. But had to give it a shot.

The Romanians had to advance on a Soviet town ringed with entrenchments and at least occupy (not necessarily control) six town hexes. Both sides had pretty good OBA. Pretty good for tender infantry in the open ground but not really for troops inside entrenchments.

The Soviets did the right thing and located the entrenchments outside the town hexes so an assault on the entrenchment would not count as occupying a town hex. Then they waited in the entrenchments and waited patiently for the Romanians to advance while dropping bombs on the Romanian leaders.

The Romanians began the long march to the opposite and less protected side of the town and used the few hills to block Soviet line of sight. Then charged the nearest entrenchments. Even got inside after the Soviet's first fire.

Then the Soviets started sending FOs to spot leaders. First alone. Those were cut down by Romanian OBA or charging platoons. Then reinforced FOs. Still pounded by OBA.

They were effective though. The Romanian platoons were scattered with no leaders nearby. Hapless infantry digging in waiting for new orders that never came. Finally the last Romanian leader was killed in a Soviet OBA salvo. No Romanian leaders left to lead assaults against the entrenchments. Game over.

But four Soviet leaders perished by exposing themselves to call in the decisive OBA.