All officers known as commissioned officers and warrant officers, appointed under and by authority of this chapter shall, before entering upon the duties of their several and respective offices, take and subscribe the oath as prescribed by the National Defense Act for officers or warrant officers, as applicable, for officers of the National Guard and shall hold their appointments in conformity therewith.

20 Del. Laws, c. 392, § ?19; Code 1915, § ?302; 32 Del. Laws, c. 22, § ?1; Code 1935, § ?265; 20 Del. C. 1953, § ?128; 64 Del. Laws, c. 258, § ?1;