 <unk> arrived at dusk , and the action continued well after dark ; in mid @-@ November night falls at close to 17 : 00 in the upper <unk> <unk> . Despite the darkness , <unk> descended out of the <unk> and deployed his troops to <unk> <unk> 's flank . As his Russians entered the <unk> , they came between a battalion of French and another of Russians . With the additional force , the French were overwhelmed , but most of the shooting subsided when the combatants could not tell apart friend from <unk> in the dark . Under the cover of darkness , <unk> used the French flotilla to evacuate his exhausted troops to the south bank . The French and Russians continued to <unk> <unk> into the night as <unk> encountered one another in the dark . <unk> of <unk> 's force provided any necessary rear guard action , and the following morning the remaining men were evacuated from the north shore of the <unk> , while they maintained possession of only <unk> and <unk> on the north bank . 
