Sentence:  While the camaraderie of war is usually an unspoken assumption, it seems peculiar that <WSD>mateship</WSD>, usually considered to be the core of the digger ethos and the ‘spirit of the Anzac', barely appears in the diggers′ own expressions at this time. 
Meaning of the word marked with <WSD> tags:  Friendship, particularly between men, such as develops in shared adversity; solidarity.