 From 27 July Weygand was an adviser to the Polish Chief of Staff, Tadeusz Jordan-Rozwadowski.It was a difficult position; most Polish officers regarded him as an interloper, and spoke only Polish, which he did not understand.At the end of July he proposed that the Poles hold the length of the Bug River; a week later he proposed a purely defensive posture along the Vistula River; both plans were rejected, as were most of his other suggestions.