Intelligence today has a lexicon of its own.
In the 19th century intelligence often meant no more than 'news' and there was no distinction between the product and the material it was derived from.
Today the lexicon is quite precise. Intelligence is the product of the information after it has been analysed; in other words what the information signifies. It is not an exact science.
Today there is also no such thing as tactical, operation or strategic intelligence; only intelligence, the three terms indicating where is it applied to assist the decision making process, not where the source of the information was derived from.
The same intelligence can be operational today, tactical tomorrow and strategic the day after.
Intelligence is a fused product from multiple sources.
How information was collected, from patrols, through interception of mail to espionage at the highest levels, and all shades of grey in between, how it was interpreted, and the means of that interpretation, is the area that has always interested me, rather than how it was applied.
Having said that, linking collection and processing with intelligence failures and successes might also work.
Good luck with your project.