ข้อมูลจากนี้ทำไมดำรงตำแหน่งแค่ปีเดียว

https://th.wikipedia.org/wiki/%E0%B8%A3%E0%B8%B2%E0%B8%A2%E0%B8%9E%E0%B8%A3%E0%B8%B0%E0%B8%99%E0%B8%B2%E0%B8%A1%E0%B9%81%E0%B8%A5%E0%B8%B0%E0%B8%8A%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%AD%E0%B8%98%E0%B8%B4%E0%B8%9A%E0%B8%94%E0%B8%B5%E0%B8%81%E0%B8%A3%E0%B8%A1%E0%B8%95%E0%B8%B3%E0%B8%A3%E0%B8%A7%E0%B8%88%E0%B9%81%E0%B8%A5%E0%B8%B0%E0%B8%9C%E0%B8%B9%E0%B9%89%E0%B8%9A%E0%B8%B1%E0%B8%8D%E0%B8%8A%E0%B8%B2%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%95%E0%B8%B3%E0%B8%A3%E0%B8%A7%E0%B8%88%E0%B9%81%E0%B8%AB%E0%B9%88%E0%B8%87%E0%B8%8A%E0%B8%B2%E0%B8%95%E0%B8%B4%E0%B8%82%E0%B8%AD%E0%B8%87%E0%B9%84%E0%B8%97%E0%B8%A2

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แล้วผบ.ทบ. (ทหารบก) ด้วยครับ  ตามกฏให้ดำรงตำแหน่งกี่ปีครับ