Answer:
He attacked Shays men in Petersham
Step-by-step explanation:
Lincoln with his troop took a hard night march towards the Petersham, where Shay's men were located.
The weather was awful and the march became dangerous for everyone who participated in it. Still, when Lincoln entered Petersham, he took Shays and his men by complete surprise. As they didn't expected the attack, most of them surrendered on the spot. Shays managed to escape.