Some parts of a sentence have been jumbled up, and labelled P, Q, R and S. Select the option that gives the correct sequence in which these parts can be rearranged to form a meaningful and grammatically correct sentence.

The soldiers were

P. lines and with little to no artillery; the battle seemed
Q. battle with the enemy
R. engaged in an uphill
S. forces, behind the enemy

lost but the soldiers didn't lose their morale at all.