Why does Katie Petronio think female combat infantry to be a bad idea? Because despite all her training, her body wasn't able to stand the rigours of combat as much as her male peers:
I was a star ice hockey player at Bowdoin College, a small elite college in Maine, with a major in government and law. At 5 feet 3 inches I was squatting 200 pounds and benching 145 pounds when I graduated in 2007. I completed Officer Candidates School (OCS) ranked 4 of 52 candidates, graduated 48 of 261 from TBS, and finished second at MOS school. I also repeatedly scored far above average in all female-based physical fitness tests (for example, earning a 292 out of 300 on the Marine physical fitness test). Five years later, I am physically not the woman I once was...
I was a motivated, resilient second lieutenant when I deployed to Iraq for 10 months, traveling across the Marine area of operations (AO) and participating in numerous combat operations. Yet, due to the excessive amount of time I spent in full combat load, I was diagnosed with a severe case of restless leg syndrome. My spine had compressed on nerves in my lower back causing neuropathy which compounded the symptoms of restless leg syndrome.
While this injury has certainly not been enjoyable, Iraq was a pleasant experience compared to the experiences I endured during my deployment to Afghanistan...By the fifth month into the deployment, I had muscle atrophy in my thighs that was causing me to constantly trip and my legs to buckle with the slightest grade change. My agility during firefights and mobility on and off vehicles and perimeter walls was seriously hindering my response time and overall capability. It was evident that stress and muscular deterioration was affecting everyone regardless of gender; however, the rate of my deterioration was noticeably faster than that of male Marines and further compounded by gender-specific medical conditions. At the end of the 7-month deployment, and the construction of 18 PBs later, I had lost 17 pounds and was diagnosed with polycystic ovarian syndrome (which personally resulted in infertility, but is not a genetic trend in my family), which was brought on by the chemical and physical changes endured during deployment.
She didn't even deploy as often as her male peers and yet her body packed it in. That's not surprising given that the female body is not there for combat purposes.