"Uppge" is tricky because normally the way the word is used today, it means to give information, but in this case it's a way of throwing around the verb phrase

"Uppge" is tricky because normally the way the word is used today, it means to give information, but in this case it's a way of throwing around the verb phrase "ge upp" (lit. 'give up', mentioned further down on Wiktionary), which means quite exactly to surrender. The text is from the 60's and it shows in exactly the type of language used.