Everything you wrote is correct. The difference in physical strength between a man and a woman of the same height and weight is enormous- something on the order of 160% for men and women, if you go by most powerlifting strength standards. And that's not even accounting for the fact that men simply generally weigh more than women.

When it comes to H2H combat, no question, strength plays a big part. I've mentioned before that I hate training with girls in martial arts classes, and it's for this exact reason- I don't get anything out of it when I can simply pick up the average woman and break her in two.

On the subject of all-female units- Tom Kratman went into considerable detail on this subject in his book, The Amazon Legion. His conclusion basically was that you CAN create a unit of women that would fight like demons, but they'd end up taking pretty nasty casualties- worse than a male unit would.

The argument for female front-line combat soldiers is ultimately illogical, confused, and deeply dangerous to women. If we are chauvinists for wanting to prevent them from getting themselves hurt or killed, well, so be it.

Start with all the stuff you have to carry. Sure, in basic training you carry around a 40 pound ruck, but once you hit actual combat you're looking at close to 100 pounds and in some cases close to 150 pounds. I've rucked with 110 pounds before and after the second hour, it was just a massive grind. Those combat loads were grinding hardened soldiers into the dust, never mind women.

Infantry means hand to hand combat. Sure there are times when you can pick people off from hundreds of yards away, but actual punch throwing, knife stabbing etc. combat is still very possible. Take a look at what the Marines had to go through in Falluja. In situations like that brute strength is one of the biggest advantages you can have. It's the same thing in martial arts. You may have the best technique in the world but it's not going to make a difference if I can pick you up and throw you across the room.

Whenever I talk with a women who advocates for women in the infantry I offer the following suggestions:

1. Mandatory injection or implant based birth control
2. Form one all female unit (after all, if both sexes are equal this is not a problem)
3. If not enough women volunteer then the numbers will be filled in by internal draft (eg. you will get reassigned to the infantry unit)
4. After a standard training cycle, this unit is put into direct combat (just like all male units)
5. The training cycle will complete even if it means lowering standards. Any standards lowered will be noted for posterity.
6. Rescue of female POWs will be at the same effort level and priority as male POWs

All of these have been universally rejected by those I've talked to. Interestingly enough, for #5 they often comment "but if you lower standards then they may not be ready". To which I answer "but what if nobody can pass the existing standard?". Confused silence…