Field Marshal is the highest military rank of the British Army. It ranks immediately above the rank of General and is the Army equivalent of an Admiral of the Fleet and a Marshal of the Royal Air Force. The rank insignia of a Field Marshal in the British Army comprises two crossed batons in a wreath of oak leaves, with a crown above. In some other countries, historically under the sphere of British influence, an adapted version of the insignia is used for Field Marshals, often with the crown being replaced with an alternative cultural or national emblem.