Answer: A greater share of honor
Explanation: Here's a clipping from the speech:
...To do our country loss; and if to live,
The fewer men, the greater share of honour...
The St. Crispin's Day speech was one in which Henry V urges his men, to fight valiantly, though they were greatly outnumbered by the French. This was the same day just before the eve of the battle of Agincourt. He called on them to recall how they, the English men, had inflicted great defeats previously upon the French, promising them great honor and even greater honor by the living when more fall in fighting for their country.