The short answer is yes, but the full truth is much more complicated and not as harsh.
To get the bad out of the way, police and soldiers are pawns in a metaphoric chess game being played by politicians, and as these pawns they are often driven to hurt or kill people for either nationalistic reasons or to enforce laws against crimes that have no victim, always being paid by money taken under the threat of death. Often, when they die fighting to stop victimless crimes or for dominance and resources on someone else land they are then hailed as heroes, which is thorough bullshit. Stealing people’s money to wage a war against them and others doesn’t make them heroes, it makes the police and military criminal gang members of an even lower order than the ones the police themselves create by enforcing their laws. They are the very mechanism by which the very worst people, the manipulative sub human scum politicians, get their power. Without the pawn’s cooperation, people like Joseph Stalin and Slobodan Milosevic would never have been able to kill millions of people. The vast majority of evil perpetrated on man kind is via their instinctive urge to obey people claiming authority, and the delusion that it’s okay to harm innocent people because it’s for the greater good, even when it clearly isn’t for the good of anyone. This is a point that can’t be sugar coated, or the entire point is of non aggression based activism is missed. It’s their damned fault directly, with less but still some blame being pointed towards people who eagerly pay their taxes, vote and wave their flags.
The nicer side of this is that a great many current and retired police and military personnel have always had the best intentions and have always wanted to do the right thing, even if their moral compass has stayed mis-calibrated and keeps contradicting itself. If they learn the error of past mistakes and adjust their thinking either partially or in full towards morality as defined by the pure freedom we propose with the non aggression principle, we of course think that is a wonderful thing. Thoroughly statist people of all sorts who come over to being libertarians and anarchists will see support from us, and we will always welcome these folks to work with us.
It should be kept in mind that in a world with a partial or full voluntaryist utopia, you would still have collective defense forces with much the same positive aspects of what they have now, and few of the negatives, and indeed plenty of the very same people would be doing it. Instead of operating on stolen money, they would operate on voluntary funds that would be redirected towards better contractors if they misbehaved. Victimless crimes wouldn’t exist, and those claiming they did who used force to stop victimless actions would have force fairly used on them instead. The police type folks even if they had a different title would just like now have important work rushing to accident scenes, helping little old lady’s unlock their cars, stopping bank robbers, and any other noble cause. And the good soldiers of today would still find ready work with people paying for regional defense services. If you think people wouldn’t potentially do this, you should consider how consistently people vote for politicians to do these things in a far more abusive and inefficient manner, as well as how many people use supplemental security systems even when they already supposedly have the state to protect them.
The problem of course is that we aren’t living in an anarcho capitalist utopia, we are living in a nightmare with endless abuse and carnage. If you are a freedom minded current or former cop or soldier, or for that matter a federal agent who is trying to spy on us and is sufficiently able to pretend, you are welcome with us, but please, do not under any circumstance expect us to water down our message in order to protect your feelings if you can’t come to terms with your past and/or present and therefore don’t like our conclusions. Liberty activism doesn’t need to be mean, but it does need to be honest, and you should always expect a sincere and dedicated liberty activist to say exactly what he or she means.