soldier on

Verb

soldier on (third-person singular simple present soldiers on, present participle soldiering on, simple past and past participle soldiered on)

1. (intransitive) To continue or persist, despite adversity or difficulty.
   • He soldiered on through the night, working hard and not sleeping.
   • But what was Northern meant to do, bearing in mind that the Class 142s and '144s' had to soldier on in service beyond their planned withdrawal dates, due to the late delivery of cascaded trains and the late entry into traffic of the £500m, 101-strong order of CAF multiple units?2020 June 17, Jim McMahon tells Richard Clinnick, “Stepping out of the shadows”, in Rail, page 41