Sentence 1: Kip lost his job at the factory. 
 Sentence 3: During boot camp, Ace had a hard time 
 Sentence 4:  He blamed Kip for his decision and they fought bitterly 
 Sentence 5:  The both stuck it out and eventually became officers 
 Option 1: He talked his friend Ace into joining the army with him. 
 Option 2: He talked his friend Ace into joining the union with him.