allforone Start of Dumas's trio's motto How giant becomes gallant, in the words of the musketeers Start of a famous motto Unity pledge start Start of a Musketeer unity motto Half of a united slogan Filled with team spirit Start of a famous motto from literature Part of a unity pledge United With 21-Down, catchphrase that provides a hint to eight answers in this puzzle Start of a quote from 20-Across Part of the Musketeers' motto