Julian Stafford Corbett,
Fighting Instructions, 1530-1816
“ But if a flag officer, commanding a squadron, or division, be with such detachment, all the ships of it are to consider themselves, for the time, as forming part of the division, or squadron, of such flag officer; and they are to obey those signals, and only those, which are accompanied by his distinguishing flag.XIII. Great care is at all times to be taken not to fire at the enemy, either over, or very near to, any ships of the fleet; nor, though the signal for battle should be flying, is any ship to fire till she is placed in a proper situation, and at a proper distance from the enemy. ”
