Texas Government Code - GOV'T § 432.130. Desertion

(1) without authority goes or remains absent from his unit, organization, or place of duty with intent to remain away permanently;

(2) quits his unit, organization, or place of duty with intent to avoid hazardous duty or to shirk important service; or

(3) without being regularly separated from one of the state military forces, enlists or accepts an appointment in the same or another of the state military forces, or in one of the armed forces of the United States, without fully disclosing the fact that he has not been regularly separated.