Add spaces: Bykeepingonastraightcoursehehadsavedenoughforthelinetohold,atbreakingpoint,untiltheAmericansbegantoarriveinstrength.

Answer: By keeping on a straight course he had saved enough for the line to hold, at breaking point, until the Americans began to arrive in strength.

Add spaces: LookingwhichairportforAreatza?

Answer: Looking which airport for Areatza?

Add spaces: 12:14WhensherecognizedPeter'svoice,shedidn'topenthegateforjoy,butranin,andreportedthatPeterwasstandinginfrontofthegate.

Answer:
12:14When she recognized Peter's voice, she didn't open the gate for joy, but ran in, and reported that Peter was standing in front of the gate.