Sick of the state's propaganda, she started putting up factual war news on an "out of the way" wall, to avoid the eyes of the government, calling them Writing on the Wall. Irene also tries to sell Welkin interview reports on Squad 7's members, as sponsorship for her to publish a book about them.
Both the news and the reports may be viewed at a later time, but the events depicted generally take place around the time of the preceding chapter.
Writing on the Wall Edit
Free unofficial news, both good and bad, will be posted on the wall as the story progress. They provide additional, though purely ancillary backstory to the world of Valkyria Chronicles.
Most of the news are EW II war news, from Squad 7's accomplishments to Gallia's war efforts, from rumours of Imperial military to status on the wider Federation front. But there are also political movements and other general news.
Judging from the motivation and comments (in manga) that Squad 7's victories as militia are taken credit by the military, it is likely that many or most of these writings are unreported or twisted by state media.
Interview reports on Squad 7's leaders can be purchased at a modest cost. Once purchased, they become new pages inserted between or after previous chapters, and can be viewed like normal chapters. New reports are labelled by sky blue bookmarks until viewed.
While most reports are purely expositional or even fan service, a few also entail challenging combat missions. Reports and report missions are required to unlock the personal potentials for Squad 7's leaders.
A new report is available roughly every two chapters, but not necessary unlocked immediately at their location in the chronicle, sometimes not even in order. For example Report 02 (Ch.4) is placed before Report 03 (Ch.6), but 02 is available for purchase later than 03 (Ch.7 vs Ch.6).
On second playthrough, reports purchased in first playthrough are playable by their location in the chronicle. Thus the order of reading will be different from first playthrough.