D. H. Guston, "The Pumpkin or the Tiger? Michael Polanyi, Frederick Soddy, and Anticipating Emerging Technologies", Minerva 50(3), 363-379 (2012), doi:10.1007/s11024-012-9204-8. Guston sets Soddy (a "scientific humanist" who foresaw the social consequences of atomic energy) against Polanyi's claim that science cannot be predicted. At Aberdeen in wartime Soddy "lamented the destructive outcomes - particularly pressing the Haber process to fix nitrogen for fertilizers into service to instead make high explosives"; reading Wells's 1914 novel "reinforced the lesson ... that governments would use any technical resource to secure military advantage"; "By 1915, according to an account by his nephew, Soddy had 'recoiled from his glance into the abyss of nuclear warfare...[and] the career of a great scientist appears to have gone progressively sour on him'" (quoted in Davies 1992: 357).
R. E. Sclove, "From Alchemy to Atomic War: Frederick Soddy's 'Technology Assessment' of Atomic Energy, 1900-1915", Science, Technology & Human Values (April 1989) - Sage abstract snippet: "In 1915, Frederick Soddy, later a winner of the Nobel Prize in Chemistry, warned publicly of the future dangers of atomic war." Copies are listed on ResearchGate and Academia.edu (not opened). Sclove cites Bodleian Soddy collection items (JSTOR snippet: "Collection, Bodleian Library, Oxford, Catalog No. 107").
How it bears on the claims
Claim 6 ("great energy and great danger"): Sclove and Guston place a public warning of atomic war by Soddy in 1915, before the 1920 edition in the folder. The 1915 text itself was not located in this run; Sclove 1989 should name it.
Matter and Energy Ch. I mentions nitrogen fixation; Guston's account of Soddy's reaction to the Haber process ties that chapter to his war experience.