Tje British officers all stood at their stations which for an Admiral and Captain
of the ship was the exposed Poop Deck
. The height of bravery or stupidity depending on how you looked at it. Nelson and the other officers didn't wear their full dress uniforms into battle but they weren't inconspicuous. Believe Nelson wore some kind of tunic with facsimile's of his medals on it so he wouldn't have been exactly camouflaged. All Navies assigned marine
or other sharpshooter to the mast
to shoot the officers. A tribute to the smooth bore muskets, the motion of the ships and marksmanship of the riflemen tha any officers on either side survived.
Nelson was hit fairly early on in the battle and the ship continued at close quarter battle for several hours afterward. At the end the ship was near total wreck with it's masts shot away and much hull
damage. It had to be towed back to Gibraltar
for a total refit
before it could put to sea again. The real reason the British won is they were much better at handling the heavy guns because of constant practice. They were able to reload and fire two to three times as fast as their French or Spanish opposition. Possibly because the revolution in France
guillotined many of the competent officers in the Navy and their extensive time holed up in port because of the Brit Blockade, the opposition wasn't up to the fighting level of the Brits.