Aggressive fire control on ships should be free for all

In my personal experience of the game, when attacking I usually use most of not 80-90% of my army thus I have barely any if not no soldiers left to defend my land especially land with a sea connection as it just takes up to many troops and defending all of it with a large force that can actually deter and Enemy army costs way to much daily. The only other solution are ships to be stationed of the coast which with fire control on aggressive which can destroy enemy soldiers before they get to land but this feature is only available to high command members which gives them a massive advantage. I believe that this one feature alone no matter how small can be the difference in a game and should thus be free for all