He invited Lieutenant Colonel Hamilton to share wiskey and discuss terms as gentlemen. Knowing that the British did not fully understand his tactical situation, he demanded and received favorable terms of surrender. Lieutenant Colonel Hamilton was later shocked to find only three people within the fort but honored his agreement. When Colonel Clark heard about the surrender several weeks later, he and his force made a bold march through icy winter weather and laid siege to Fort Sackville. Captain Helm was inside Fort Sackville as a prisoner during the siege, and Clark notes in his memoir that he "amused himself very much during the siege, and, I believe, did much damage."