Does anybody have any advice on being 'let go' due to AT?

I am currently a temp, with the contract being temp to hire sir, I sat down with the head of HR and the Operations manager last tuesday to discuss options and was directly told they do not want to hire me due to the upcoming days I would be gone.

First question...has this company hired every temp that has worked for them? The truth is that you work for the contract agency and not the contracting employer so the normal employment rules do not apply. a temp(or contingency employee) has no right of hire. But as an aside, I think that the HR and operations managers acted foolishly by even having that conversation. If they have hired every temp provided in the past, then you can assert a discriminatory employment action based upon their actions regarding your military service. As a veteran I know the value of hiring the vet. As an employer, I also know the challenges and additional costs involved with scheduling around deployments and AT. Most employers see Reserve or Guard time as a second job that takes away from your primary employment. Some production facilities have difficulties covering additional absences. Maybe not hiring you now does not mean not hiring you later. It might be that they want to get your service training out of the way. Good luck.

PFC (Join to see) - That case is very cut and dry, you can fight and probably lose the USERRA process, or sell yourself to the HR/Ops managers regarding how the guard makes you a better employee, explain what you'd be doing and why that matters to them, gaining leadership roles, responsibility, initiative... be creative and optimistic in your sales pitch and likely you'll be promoted faster. But you need to be ready to jump ship and get a new job as well.

Good luck and thank you for your service.