“…On the other hand, the advantages of veterans are also reflected in enjoying better social welfare and medical resources (Angrist, 1998; Davies et al, 2015; Oh & Berry, 2021; Waller & McGuire, 2011), having more competitive military skills (Johansen et al, 2014; Lindqvist & Vestman, 2011; MacLean, 2017), improving personal qualities and abilities (Angrist & Chen, 2011; Brown & Routon, 2016; Eynde, 2015; L. Wang et al, 2012), obtaining higher socioeconomic status (e.g., Angrist & Krueger, 1994; Bachman et al, 2000; Brown & Routon, 2016; MacLean & Kleykamp, 2021; Sheehan & Hayward, 2019; Smith et al, 2012), and accumulating political resources (Diamant, 2008; Hou et al, 2020; Wakenhut, 1979; Wu & Treiman, 2004). Hence superior external conditions seem to make veterans have better health outcomes.…”