First Lieutenant is a military rank.
The rank of Lieutenant has different meanings in different military formations (see comparative military ranks), but the majority of cases it is common for it to be sub-divided into a senior (First Lieutenant) and junior (Second Lieutenant) rank. In navies it may relate to a particular post rather than a rank.
In the British Army and Royal Marines, the rank above Second Lieutenant is simply Lieutenant, with no...
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First Lieutenant is a military rank.
The rank of Lieutenant has different meanings in different military formations (see comparative military ranks), but the majority of cases it is common for it to be sub-divided into a senior (First Lieutenant) and junior (Second Lieutenant) rank. In navies it may relate to a particular post rather than a rank.
In the British Army and Royal Marines, the rank above Second Lieutenant is simply Lieutenant, with no ordinal attached.
Before 1871, when the whole British Army switched to using the current rank of "Lieutenant", the Royal Artillery, Royal Engineers and Fusilier regiments used "First Lieutenant" and "Second Lieutenant".
The First Lieutenant (1st Lt) in a Royal Navy ship is a post or appointment, rather than a rank.
Historically the lieutenants in a ship were ranked in accordance with seniority, with the most senior being termed the First Lieutenant and acting as the second-in-command, unless the ship was complemented with a Commander....
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