Appellant, a resident of Iowa, was ordered by the military department of the United States to take his troops to Fort Snelling, Minnesota, for a training period, during which time he was served with summons to appear in the district court of Ramsey county. Appellant filed a motion to quash, on the grounds that the Minnesota court had no jurisdiction since he was on a military reservation belonging to the United States and claimed privilege from service because he was involuntarily there in obedience to orders. The motion was overruled and judgment was entered against him. Held, if the refusal to grant the privilege were erroneous, the judgment would be voidable only and therefore not subject to collateral attack in this jurisdiction. Since the statute ceding jurisdiction reserved the right to the state to serve process, the summons was not invalid and the Minnesota court had jurisdiction. Northwestern Casualty & Surety Co. v. Conaway (Iowa 1930) 230 N.W. 548.