She's also likely to get a portion of his social security, as they were married over 10 years.
Doggie is right - this is NOT alimony. The court is ordering that she is entitled to a portion of his military retirement benefit (presumably because she was holding down the home front and raising children during his military service, rather than working and contributing to her own retirement). Alimony is generally a SEPARATE payment made monthly to support the ex spouse, and while it CAN be lifetime, it is intended to keep the spouse at the same standard of living until such time as they may be able to provide it for themselves.
This is figured out on a case by case basis, and is based on the length of the marriage, the level and extent of financial dependency of one spouse on the other, and job prospects and abilities of the spouse seeking support - so there's a huge difference between a fit 26 year old with a college degree (young and educated = likely to be able to support herself) versus a 59 year old who has been a homemaker for 40 years and has arthritis and COPD (unskilled, uneducated, health issues, and not likely to be able, even with effort, to garner employment that would enable a similar standard of living).
The division of retirement/pension assets is generally seen when only ONE spouse has been the primary bread-winner for some significant portion of the marriage as opposed to BOTH spouses working and amassing a retirement nest egg.

