| 1 | A | B | C | D | E | F |
| --- | --- | --- | --- | --- | --- | --- |
| 2 | List of commanders-in-chief of the Royal Thai Army - Royal Thai Army |  |  |  |  |  |
| 3 | No. | Portrait | Rank | Name | Term begins | Term ends |
| 4 | 11 (1) | - | General | Phraya Phahonphonphayuhasena (Phot Phahonyothin) | 1932 | 1938 |
| 5 | 12 (1) | - | Field Marshal | Luang Phibunsongkhram (Plaek Phibunsongkhram) | 1938 | 1944 |
| 6 | 13 | - | Lieutenant General | Phichit Kriangsakphichit | 6 Aug 1944 | 24 Aug 1944 |
| 7 | 11 (2) | - | General | Phraya Phahon Phonphayuhasena (Phot Phahonyothin) | 1944 | 1946 |
| 8 | 14 | - | General | Adul Aduldejcharat (Bhat Peungprakhun) | 1946 | 1947 |
| 9 | 12 (2) | - | Field Marshal | Luang Phibunsongkhram (Plaek Phibunsongkhram) | 1947 | 1948 |
| 10 | 15 | - | Field Marshal | Phin Choonhavan | 1948 | 1954 |
| 11 | 16 | - | Field Marshal | Sarit Thanarat | 1954 | 1963 |
| 12 | 17 | - | Field Marshal | Thanom Kittikachorn | 1963 | 1964 |
| 13 | 18 | - | Field Marshal | Praphas Charusathien | 1964 | 1973 |
| 14 | 19 | - | General | Kris Sivara | 1973 | 1975 |
| 15 | 20 | - | General | Boonchai Bamroongpong | 1975 | 1976 |
| 16 | 21 | - | General | Serm Na Nagara | 1976 | 1978 |
| 17 | 22 | Prem Tinsulanoda cropped.JPG | General | Prem Tinsulanonda | 1978 | 1981 |
| 18 | 23 | - | General | Prayut Jarumanee | 1981 | 1982 |
| 19 | 24 | - | General | Arthit Kamlang-ek | 1982 | 1986 |
| 20 | 25 | - | General | Chavalit Yongchaiyudh | 1986 | 1990 |
| 21 | 26 | - | General | Suchinda Kraprayoon | 1990 | 1992 |
| 22 | 26 | - | General | Isarapong Noonpakdee | 7 Apr 1992 | 31 Jul 1992 |
| 23 | 28 | - | General | Vimol Vongvanich | 1992 | 1995 |
| 24 | 29 | - | General | Pramon Plasindhi | 1995 | 1996 |
| 25 | 30 | - | General | Chettha Thannajaro | 1996 | 1998 |
| 26 | 31 | - | General | Surayud Chulanont | 1998 | 2002 |
| 27 | 32 | - | General | Somtat Attanand | 2002 | 2003 |
| 28 | 33 | - | General | Chaiyasit Shinawatra | 2003 | 2004 |
| 29 | 34 | - | General | Prawit Wongsuwan | 2004 | 2005 |
| 30 | 35 | - | General | Sonthi Boonyaratglin | 2005 | 2007 |
| 31 | 36 | - | General | Anupong Paochinda | 2007 | 2009 |
| 32 | 37 | - | General | Prayut Chan-o-cha | 2010 | 2014 |
| 33 | 38 | - | General | Udomdej Sitabutr | 2014 | 2015 |
| 34 | 39 | - | General | Teerachai Nakwanich | 2015 | 2016 |
| 35 | 40 | - | General | Chalermchai Sitthisart | 2016 | 2018 |
| 36 | 41 | - | General | Apirat Kongsompong | 2018 | Incumbent |

Question: Who replaced whom as the Commander of the Royal Siamese Army in 1938?
Answer: In 1938, Luang Phibunsongkhram replaced Phraya Phahonphonphayuhasena as Commander of the Royal Siamese Army.