Unlike active duty pay, military retired/retainer pay is only paid once per month. Your net retired/retainer pay should be sent to your financial institution by Direct Deposit unless you either reside in a foreign country, which Direct Deposit is not available. Your military retirement pension pay will be deposited to your account on the first business day of the month following the end of the month.
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If you retire from the military, and are retired/retiring from Federal Civil Service, you can elect to waive your  military retirement pension pay in order to include your military service in the computation of your civil service annuity. (Which, depending upon the circumstances can be financially worth it). However, for military retirement pension reservists, this is true only if you are service retired years of service or disability retired. If you are age retired (age 60) then there is no waiver or offset (a technical "loophole" in the law). If you choose to do so, you need to notify DFAS, in writing, at least 60 days prior to your planned civilian retirement date.

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military retirement pension  Garnishments/Withholdings

Unlike active duty pay, military retired/retainer pay cannot be garnished for commercial debts (i.e. credit cards, automobile loans, ect.) Military retirement pension pay can, however, be garnished for alimony, child support, IRS Tax Levies, and debts owed to the government (i.e. student loans, PX/BX Deferred Payment delinquencies, Officer/NCO Club payment delinquencies, ect.)

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