Admiral: highest rank in the (now non-existent) Austrian Navy, corresponds to rank of General in the Infantry; first conferred in Austria in 1875. The rank of "Gross-Admiral" (Fleet Admiral) was introduced in Austria in 1916.
Further reading#H. Bayer v. Bayersburg, Oesterr. Admirale 1719-1866, 1960; idem, Oesterr. Admirale 1867-1918, 1962.