Saltire

A saltire, or Saint Andrew's Cross, is a heraldic symbol in the form of a diagonal cross ☓ or letter x. Saint Andrew is said to have been martyred on such a cross. In the Russian Orthodox tradition, the phrase Saint Andrew's Cross is often equated with the Orthodox cross, because of the tradition that Saint Andrew used such a cross when preaching in the respective regions. The Saltire design is however distinct from that of the Orthodox Cross.