The Three Musketeers by Alexandre Dumas Chapter 39 Page 22

Athos divided them into three groups, assumed the command of one, gave the second to Aramis, and the third to Porthos; and then each group went and took their watch near an entrance.

D’Artagnan, on his part, entered boldly at the principal gate.

Although he felt himself ably supported, the young man was not without a little uneasiness as he ascended the great staircase, step by step. His conduct toward Milady bore a strong resemblance to treachery, and he was very suspicious of the political relations which existed between that woman and the cardinal. Still further, de Wardes, whom he had treated so ill, was one of the tools of his Eminence; and d’Artagnan knew that while his Eminence was terrible to his enemies, he was strongly attached to his friends.